1- This explanation video tutorial can be used for CASIO watch Models starting with GX-56 which means using Module Number 3221.
(Note: It is close to the model GXW-56 Module Number 3220).
2- The used model for this tutorial is GX-56-1B
3- This video can support you to adjust and use your watch if it is ( GX-56-1A , GX-56-1B , GX-56-4 , GX-56BB-1 , GX-56DGK-1 , GX-56GB-1 , GX-56KG-3 , GX-56SLG-1 ).

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